:root {
  --primary-color: #8FBC8F; /* Sage Green */
  --primary-dark: #6B8E6B;
  --secondary-color: #4a4a4a; /* Warm Charcoal */
  --accent-color: #FFD1DC; /* Soft Pink */
  --background-color: #fdfcfc; /* Off-white / very light warm grey */
  --text-color: #555555;
  --font-heading: "Playfair Display", serif;
  --font-body: "Lato", sans-serif;
  --spacing-unit: 1rem;
  --border-radius: 12px;
  --box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05); /* Softer shadow */
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-body);
  background-color: var(--background-color);
  color: var(--text-color);
  line-height: 1.8;
  overflow-x: hidden;
}

h1,
h2,
h3 {
  font-family: var(--font-heading);
  color: var(--secondary-color);
  margin-bottom: var(--spacing-unit);
  font-weight: 400; /* Lighter weight for elegance */
}

/* Utilities */
.container {
  max-width: 1000px; /* Slightly narrower for reading comfort */
  margin: 0 auto;
  padding: 0 20px;
}

.btn {
  display: inline-block;
  padding: 14px 35px;
  background-color: var(--primary-color);
  color: white;
  text-decoration: none;
  border-radius: 50px;
  font-weight: 400;
  letter-spacing: 1px;
  text-transform: uppercase;
  font-size: 0.9rem;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(143, 188, 143, 0.4);
}

.btn:hover {
  background-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(143, 188, 143, 0.6);
}

/* Sections */
section {
  padding: 100px 0;
}

/* Hero Section */
#hero {
  background: 
    linear-gradient(rgba(255, 255, 255, 0.3), rgba(255, 255, 255, 0.3)),
    url("images/floral_header_background.png") no-repeat center center/cover;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
}

#hero h1 {
  font-size: 4rem;
  color: var(--secondary-color);
  margin-bottom: 0.5rem;
  font-style: italic;
  text-shadow: 2px 2px 4px rgba(255, 255, 255, 0.8);
}

#hero .date {
  font-size: 1.2rem;
  font-weight: 400;
  margin-bottom: 2rem;
  display: block;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--primary-color);
}

#hero p {
  font-size: 1.1rem;
  margin-bottom: 3rem;
  opacity: 0.8;
  font-weight: 300;
}

/* Details Section */
#details {
  background-color: white;
  text-align: center;
  position: relative;
}

.details-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 60px;
  margin-top: 60px;
}

@media (min-width: 768px) {
  .details-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.detail-card {
  padding: 50px 30px;
  background: white;
  border: 1px solid rgba(0,0,0,0.03);
  border-radius: var(--border-radius);
  transition: transform 0.3s ease;
}

.detail-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--box-shadow);
  border-color: var(--accent-color);
}

.detail-card h3 {
  color: var(--primary-color);
  font-size: 2rem;
  margin-bottom: 20px;
}

/* RSVP Section */
#rsvp {
  background: linear-gradient(to bottom, #fff, #FFF0F5); /* Subtle fade to pink */
  text-align: center;
}

#rsvp h2 {
  color: var(--secondary-color);
  font-size: 2.5rem;
}

.rsvp-form {
  max-width: 600px;
  margin: 0 auto;
  background: white;
  padding: 50px;
  border-radius: var(--border-radius);
  color: var(--text-color);
  box-shadow: var(--box-shadow);
  border-top: 5px solid var(--accent-color);
}

.form-group {
  margin-bottom: 25px;
  text-align: left;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 400;
  font-size: 0.95rem;
  color: var(--secondary-color);
  letter-spacing: 0.5px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 15px;
  border: 1px solid #eee;
  border-radius: 6px;
  font-size: 1rem;
  font-family: var(--font-body);
  background-color: #fafafa;
  transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  background-color: white;
}

/* Footer */
footer {
  background-color: white;
  color: #999;
  text-align: center;
  padding: 60px 0;
  font-size: 0.85rem;
  letter-spacing: 1px;
  border-top: 1px solid #eee;
}

/* Mobile Responsiveness tweaks */
@media (max-width: 600px) {
  #hero h1 {
    font-size: 3rem;
  }
  
  .rsvp-form {
      padding: 30px;
  }

  section {
    padding: 60px 0;
  }
}